. Growth of ponderosa pine poles thinned to different stocking levels in central Oregon. Ponderosa pine Oregon; Ponderosa pine Oregon Spacing. 8000 r 7500 7000 6500 Q 6000 ® 5500 .2 5000 g 4500 â O 4000 .2 3500 >. â 3000 to O 2500 I- 2000 1500 1000 500 0 \\ Including the second thinning only [] Including the initial and second thinning 6 11 18 3 8 16 2 12 15 5 7 10 4 9 13 1 14 17 Plot number 30 60 80 100 120 150 Growing-stock level Figure 7.âGross total yield 15 years after the initial thinning. Distribution 10 years after the initial thinning and before second thinning | Distribution 5 ye
. Growth of ponderosa pine poles thinned to different stocking levels in central Oregon. Ponderosa pine Oregon; Ponderosa pine Oregon Spacing. 8000 r 7500 7000 6500 Q 6000 ® 5500 .2 5000 g 4500 â O 4000 .2 3500 >. â 3000 to O 2500 I- 2000 1500 1000 500 0 \\ Including the second thinning only [] Including the initial and second thinning 6 11 18 3 8 16 2 12 15 5 7 10 4 9 13 1 14 17 Plot number 30 60 80 100 120 150 Growing-stock level Figure 7.âGross total yield 15 years after the initial thinning. Distribution 10 years after the initial thinning and before second thinning | Distribution 5 years after 1 3 5 7 9 11 13 15 17 19 Diameter at breast height (inches) Figure 8.âAverage diameter distribution on four of the six growing-stock levels 10 years after the initial thinning, and 5 years after the second thinning. 7. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Barrett, James W. (James Willis), 1922- cn; Pacific Northwest Forest and Range Experiment Station (Portland, Or. ). [Portland, Or. ] : U. S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
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